Florida State University Research Foundation, Inc.

Ernesto S Bosque

David Larbalestier

Ulf Peter Trociewitz

Charles Lamar English

Peng S Chen

Eric E Hellstrom

David K Hilton

Adam Voran

Maxime R Matras

George Miller

Jianyi Jiang

William L Starch

Dmytro V Abraimov

Youngjae Kim

Andrey Gavrilin

Dylan Kolb-Bond

A non-bonded, tape wound magnet includes a stack of disk coils, the disk coils having outer radius rstacked on a z axis having opposing terminal ends. The disk coils include pancake-wound superconducting tape including a superconducting material and having a wound radius r. At least one disk coil at each opposing terminal end of the stack has overbanding positioned radially outward from the pancake wound superconducting tape. The overbanding has an elastic modulus and ultimate tensile strength at least 50% greater than the elastic modulus and ultimate tensile strength of the superconducting tape, and an electrical resistance at least 100% greater than that of the superconducting material, the overbanding having a radial dimension r. The overbanding applies radial compression to the pancake wound superconducting tape. A method of making a magnet is also disclosed.

System and method to manage pancake deformation in REBCO wound magnet

A furnace system including an outer shell which comprises a top flange, an elongated body portion, and a bottom flange, wherein the outer shell is a pressure vessel, with no penetrations in the elongated body portion; a heater assembly which comprises (i) a single-piece annular shaped insulation layer, and (ii) a plurality of heaters embedded in the insulation layer, wherein the heater assembly is disposed within the elongated body portion of the outer shell; and an innermost layer disposed within the annular-shaped insulation layer, wherein the innermost layer is a baffle tube configured to force a natural convective flow, wherein each of the plurality of heaters is individually controllable and the plurality of heaters are configured to heat different zones within the furnace to different temperatures and/or at different rates. The system may be used to heat treat magnet materials, such as those formed of Bi-2212, therein.

High pressure furnace and methods of use

A coil for a magnet includes a superconductor comprising a BiSrCaCuO(Bi-2212) high temperature superconductor (HTS) filament. The HTS filament can be encased in a protective conducting sheath. The superconductor is wound to form a coil. A reinforcement winding is wound with the superconductor. The reinforcement winding can be a wire, a tape, a band, and an outer layer encasing the superconductor filament. A method of making a coil for a magnet, a composite superconductor for a magnet, and a magnet are also disclosed.

System and method to manage high stresses in Bi-2212 wire wound compact superconducting magnets

The present invention provides a system and method for producing superconducting joints between superconductive segments of a Bi-2212 high-temperature superconducting (HTS) conductor, thereby eliminating the heat generating resistive joints that are commonly known in the art for connecting two or more smaller Bi-2212 conductive segments to create an Bi-2212 conductor of adequate length.

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Tallahassee, FL, United States of America

Ernesto S Bosque